Crusher with rotating crusher bodies

Abstract

A crusher comprises first and second rotating crusher bodies installed on two rotatably supported shafts spaced apart from each other, and having crusher blades provided on their outer peripheries. A first compression board is positioned at one side of both of the crusher bodies, forming a crushing passage with one side of these rotating crusher bodies, and is capable of compressing an object passing through this crushing passage. A gate board is located below the first compression board and opens and closes the crushing passage.

I claim: 
     
       1. A crusher apparatus for crushing objects comprising a housing having spaced side walls and a bottom section, crusher means within said housing, said crusher means comprising first and second rotatable crusher bodies rotatable within said housing, said first rotatable crusher bodies being spaced from said first and second side walls to define a first path for said objects between said first side wall and said first and second rotatable crusher bodies, said second rotatable crusher body being spaced from said second wall to define a second path for said objects between said second wall and said second rotatable crusher body, a compression means pivotably mounted on said housing and pivotable between a first position disposed outside of said first path and a second position within said first path, a gate means pivotably mounted on said housing at a position generally underlying said compression means and pivotal between a first position outside said first path and a second position within said first path, the crusher apparatus having a first operable condition in which said gate means is in said first position and said first and second rotatable crusher bodies rotate in the same direction to crush said object as the latter passes along said first path to said bottom section of said housing, the crusher apparatus having a second operable condition in which said gate means is in said second position and said first and second rotatable crusher means rotate in opposite directions to crush said object as the latter passes along a first portion of said first path, between said first and second oppositely rotating crusher bodies, and along said second path to said bottom section of said housing, said compression means being pivotable from its first to its second position while the crusher apparatus is operating in said first condition to press said object against said crushing means. 
     
     
       2. A crusher apparatus according to claim 1, wherein said compression means is a first compression means, further comprising a second compression means pivotably mounted on said housing and pivotable between a first position disposed outside of said second path and a second position within said second path, said second compression means being pivotable from said first to said second position to press said object against said second rotating crusher body when the crusher apparatus is operating in said second operable condition. 
     
     
       3. A crusher apparatus according to claim 2, wherein said second compression means defines a part of said second path when said second compression means is in its first position. 
     
     
       4. A crusher apparatus according to claim 1, wherein said gate means blocks said first path when said gate means is in its second position. 
     
     
       5. A crusher apparatus according to claim 1, wherein said gate means defines a part of said first path when said gate means is in said first position. 
     
     
       6. A crusher apparatus according to claim 1, wherein said compression means defines a part of said first path when said compression means is in its first position. 
     
     
       7. A crusher apparatus according to claim 1, wherein said compression means compresses said object against said second rotatable crusher body when the crusher apparatus is in said first operable condition. 
     
     
       8. A crusher apparatus according to claim 1, wherein said second rotatable crusher body is disposed at a lower elevation than said first rotatable crusher body, and said second rotatable crusher body is disposed laterally to one side of said first rotatable crusher body. 
     
     
       9. A crusher apparatus for crushing objects comprising a housing having spaced side walls and a bottom section, crusher means within said housing, said crusher means comprising first and second rotatable crusher bodies rotatable within said housing, said first and second rotatable crusher bodies being spaced from said first side wall to define a first path for said objects between said first side wall and said first and second rotatable crusher bodies, said second rotatable crusher body being spaced from said second wall to define a second path for said objects between said second wall and said second rotatable crusher body, a compression means pivotably mounted on said housing and pivotable between a first position disposed outside of said first path and a second position within said first path, a gate means pivotably mounted on said housing at a position generally underlying said compression means and pivotal between a first position outside said first path and a second position within said first path, the crusher apparatus having a first operable condition in which said gate means is in said first position and said first and second rotatable crusher bodies crush said object as the latter passes along said first path to said bottom section of said housing, the crusher apparatus having a second operable condition in which said gate means is in said second position and said first and second rotatable crusher means crush said object as the latter passes along a first portion of said first path, between said first and second crusher bodies, and along said second path to said bottom section of said housing, said compression means being pivotable from its first to its second position while the crusher apparatus is operating in said first condition to press said object against said crushing means.